Ferroalloy blast furnace production method
The main raw materials for smelting carbon fiber by 3d printing ferromanganese by the blast furnace method include manganese ore, coke and flux, limestone, dolomite (and combustion-supporting air or o...
Effect of deoxidation method on the quality of continuous casting billet
The deoxidation method will affect the type of inclusions in the steel, the fluidity of the molten steel and the cleanliness of the steel, so it is very important to choose the deoxidation method. Gen...
Anti-interference Countermeasures for PLC Control Systems
Overview Various types of PLCs used in automation systems, some are installed centrally in the control room, and some are installed dispersedly on individual equipment at the production site. Although...
Encyclopedia of basic futures knowledge
Futures trading: refers to a transaction in which the buyer and seller do not deliver immediately after the transaction is completed, but perform delivery procedures according to the transaction price...
Arrangement of bar and wire roughing mill
(1) Horizontal two-roll tandem rolling mill. The working stands mostly use closed rolling mills, and prestressed rolling mills and short-stressed rolling mills are also used. Generally, the longitudin...
skim
The production process of cold-rolled strips is to remove foreign matter such as rolling oil, machine oil, iron dust and dust attached to the surface of cold-rolled strips before annealing. Degreasing...
Basic questions and answers on ironmaking production technology
1. What types of iron ores are commonly used in blast furnaces? What are their characteristics? Answer: Industrial iron ore is named after the iron-containing mineral deposits in which the iron conten...
What are the basic knowledge of futures?
1. The Origin of Futures Trading The futures market first sprouted in Europe. As early as the ancient Greek and Roman periods, there had been central trading venues, bulk barter transactions, and trad...
Current status of use of slit rolling in bar production
At present, split rolling is used most in bar production, and among bar split rolling methods, the split wheel method dominates. The slitting wheel slitting rolling method has developed rapidly in the...
Principles for formulating secondary cooling system for continuous casting
From a heat transfer point of view, to improve the heat transfer between the spray water droplets and the slab in the secondary cooling zone is to increase the water flow density and quickly take away...
Basic knowledge of canned pump maintenance
The canned pump is composed of a centrifugal pump and a three-phase asynchronous canned motor coaxially. It does not require mechanical seals and has no leakage. It is suitable for transporting variou...
Supervision standards for pressure pipelines in chemical enterprises
Chapter 1 General Provisions Article 1 In order to ensure the safe, stable and long-term operation of pressure pipelines in chemical enterprises and protect the safety of people’s lives and prop...
Temperature status detection within the sintering layer
The Mizushima Steel Plant of Kawasaki Steel Company in Japan is equipped with a special grate bar that moves with the trolley on the sintering mini exquisite power amplifier machine enclosure trolley ...
Application of electronic control design of soil heat pump unit in radiant panel system
0 Introduction With the continuous improvement of social living standards, people have put forward higher requirements for their working and living environment. Comfort, health, energy saving and poll...
Germany develops new aluminum rotation casting die casting technology
Germany’s VAW Aluminum Technology Company has researched and developed a new aluminum rotation centrifugal casting die-casting technology (Rotacast-diecasting). Castings produced using this tech...
What are the mechanical properties of steel?
The mechanical properties of steel are important indicators to ensure the final performance (mechanical properties) of steel. It depends on the chemical composition and heat treatment system of the st...
Reference case of technical attributes related to HGHP high temperature water source heat pump unit
Refrigeration capacity: 180KW-540KW Applicable areas: areas with sufficient water volume, moderate water temperature and suitable water quality Applicable scope: 3000 m²-6000 m² shopping malls, office...
Analysis of process paths to meet the new safety standards for electric water heaters
Analysis of process paths to meet the new safety standards for electric water heaters The new safety standard GB4706.12-2006 “Special Requirements for Safe Storage Electric Water Heaters for Hou...
Basic principles of hole design
The hole design assistance includes the following basic principles: (1) Choose a reasonable hole system. The reasonable selection of the pass system not only affects whether steel can be produced more...
Preparation and application of ultra-high molar mass polyethylene pipe fittings
Ultra high molar mass polyethylene (UHMWPE) is a thermoplastic engineering plastic with excellent comprehensive properties. At present, UHMWPE pipes have been widely used in fields such as mining, ele...
High power electric arc furnace
The transformer capacity per unit furnace capacity of high-power electric arc furnace (EAF) is higher than that of ordinary power steelmaking electric arc furnace. As a reference value for determining...
oil
Oiling is intended to prevent steel plates from rusting. The oil should not deteriorate within one year under dry storage conditions at room temperature; it can be easily removed by the alkaline oilin...
Basic properties of copper pipes
The pressure resistance of copper pipes is several times or even dozens of times that of plastic pipes and aluminum 5083-alloy. It can withstand the highest water pressure in today’s buildings. ...
The role of fluorite for converters
Fluorite is a flux, and its main component is CaF2. The melting point of pure CaF2 is 1418°C. Fluorite also contains components such as SiO2 and S, so the melting point is around 930°C. After being ad...
What are the basic knowledge of drive shafts?
1. Introduction to drive shaft assembly (combined with specific assembly diagram) Transmission shaft, English PROPELLER (DRIVING) SHAFT. Power is transmitted between two axes with different axes and e...
Fault self-diagnosis methods and uses of CNC machine tools
1. Power-on self-diagnosis: The so-called power-on self-diagnosis refers to the diagnosis automatically performed by the system’s internal diagnostic program when the control system is powered o...
ribbon carbide
The crystallization segregation formed when high-carbon chromium copper parts ingots are cooled, and the carbide-enriched zones that extend during hot rolling deformation are called banded carbides, w...
Determining factors of oxygen lance gun position and gun height
Adjusting the position of the oxygen lance can adjust the interaction between the oxygen jet and the molten pool, thereby controlling the blowing process. Therefore, the oxygen lance position is an im...
Straightening of steel
The rolled finished steel, especially the section steel, is often not straight enough and its cross-sectional metal u shaped bracket is not correct enough. Steel materials may also bend or end torsio...
electroleaching
The leaching method uses the anode reaction of the electrolytic cell to dissolve the valuable metals in the material into the solution. Also called electrochemical leaching. The material (graphite pow...
Self-differential pressure control valve is used in HVAC engineering
Abstract: The working principle of the self-operated self-pressure differential control valve is introduced, and the application of the valve in cold and heat source protection and central heating pro...
Mold materials and mold thermal operation methods
Mold material selection is a very important link in the entire mold making process. Mold material selection needs to meet three principles. The mold should meet work requirements such as wear resistan...
Introduction to the concept of pipe jacking project for fiberglass reinforced plastic sand-filled pipes
A main traffic artery with a road width of 60 m and a large traffic volume, it is one of the important transportation hubs in Shenyang City. With the development of social economy, the original sewage...
Attention to organizational control of steel bar rolling
Due to the deformation and temperature characteristics of the steel bar rolling process, it is difficult to control the structure. Controlled rolling can only be achieved by controlling the temperatur...
Analysis of the Mechanism of Shaft Voltage and Shaft Current Generation in Variable Frequency Motors
1 Introduction When the motor is driven by a sine wave power source, the shaft voltage is generated through the alternating magnetic flux of the motor shaft. These magnetic links are caused by factors...
Mechanism of Lubrication in Hot Rolling Process
The main purpose of lubrication in hot rolling process is to reduce roller wear, reduce rolling force, and improve product quality. So far, the research on lubrication technology for hot rolling proce...